2. Grind
all the ingredients for masala to a smooth paste with little water and keep
aside.

3. Heat
oil in a pressure cooker, when it is hot add mustard seeds, when they start to
splutter, add onion, fry the onion until it becomes translucent. Now add black
channa, potato and egg plant, fry for few minutes. now add chilli powder,
coriander powder and salt, fry for some more minutes.

4. Add
ground masala, fry the masala for 5-8 minutes, until oil comes out. Now add 2-3
cups water.cover the cooker with a lid and cook it for 3-4 whistles.